87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2019 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specic language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef MEDIAPROVIDER_JNI_FUSEDAEMON_H_
|
||
|
|
#define MEDIAPROVIDER_JNI_FUSEDAEMON_H_
|
||
|
|
|
||
|
|
#include <android-base/unique_fd.h>
|
||
|
|
|
||
|
|
#include <memory>
|
||
|
|
#include <string>
|
||
|
|
|
||
|
|
#include "MediaProviderWrapper.h"
|
||
|
|
#include "jni.h"
|
||
|
|
#include "node-inl.h"
|
||
|
|
|
||
|
|
struct fuse;
|
||
|
|
namespace mediaprovider {
|
||
|
|
namespace fuse {
|
||
|
|
class FuseDaemon final {
|
||
|
|
public:
|
||
|
|
FuseDaemon(JNIEnv* env, jobject mediaProvider);
|
||
|
|
|
||
|
|
~FuseDaemon() = default;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Start the FUSE daemon loop that will handle filesystem calls.
|
||
|
|
*/
|
||
|
|
void Start(android::base::unique_fd fd, const std::string& path, const bool uncached_mode,
|
||
|
|
const std::vector<std::string>& supported_transcoding_relative_paths,
|
||
|
|
const std::vector<std::string>& supported_uncached_relative_paths);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the FUSE daemon is started.
|
||
|
|
*/
|
||
|
|
bool IsStarted() const;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if file should be opened with FUSE
|
||
|
|
*/
|
||
|
|
bool ShouldOpenWithFuse(int fd, bool for_read, const std::string& path);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the FUSE daemon uses FUSE passthrough
|
||
|
|
*/
|
||
|
|
bool UsesFusePassthrough() const;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Invalidate FUSE VFS dentry cache entry for path
|
||
|
|
*/
|
||
|
|
void InvalidateFuseDentryCache(const std::string& path);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the given uid has access to the given fd with or without redaction.
|
||
|
|
*/
|
||
|
|
std::unique_ptr<FdAccessResult> CheckFdAccess(int fd, uid_t uid) const;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize device id for the FUSE daemon with the FUSE device id of the given path.
|
||
|
|
*/
|
||
|
|
void InitializeDeviceId(const std::string& path);
|
||
|
|
|
||
|
|
private:
|
||
|
|
FuseDaemon(const FuseDaemon&) = delete;
|
||
|
|
void operator=(const FuseDaemon&) = delete;
|
||
|
|
MediaProviderWrapper mp;
|
||
|
|
std::atomic_bool active;
|
||
|
|
struct ::fuse* fuse;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace fuse
|
||
|
|
} // namespace mediaprovider
|
||
|
|
|
||
|
|
#endif // MEDIAPROVIDER_JNI_FUSEDAEMON_H_
|